3 * Copyright (C) 2007 EDIT
4 * European Distributed Institute of Taxonomy
5 * http://www.e-taxonomy.eu
7 * The contents of this file are subject to the Mozilla Public License Version 1.1
8 * See LICENSE.TXT at the top of this package for the full license terms.
11 package eu
.etaxonomy
.taxeditor
.navigation
.navigator
;
13 import org
.apache
.log4j
.Logger
;
14 import org
.eclipse
.jface
.viewers
.ITreeContentProvider
;
15 import org
.eclipse
.jface
.viewers
.Viewer
;
17 import eu
.etaxonomy
.cdm
.hibernate
.HibernateProxyHelper
;
18 import eu
.etaxonomy
.cdm
.model
.taxon
.ITaxonTreeNode
;
19 import eu
.etaxonomy
.cdm
.model
.taxon
.TaxonNode
;
22 * <p>TaxonNodeContentProvider class.</p>
28 public class TaxonNodeContentProvider
implements ITreeContentProvider
{
29 private static final Logger logger
= Logger
30 .getLogger(TaxonNodeContentProvider
.class);
32 private static final Object
[] NO_CHILDREN
= new Object
[0];
36 public Object
[] getChildren(Object parentElement
) {
37 Object
[] children
= null;
39 if(parentElement
instanceof ITaxonTreeNode
){
40 ITaxonTreeNode treeNode
= (ITaxonTreeNode
) HibernateProxyHelper
.deproxy(parentElement
);
41 children
= treeNode
.getChildNodes().toArray();
44 return children
!= null ? children
: NO_CHILDREN
;
49 public Object
getParent(Object element
) {
50 if(element
instanceof TaxonNode
){
51 return ((TaxonNode
) element
).getParent();
58 public boolean hasChildren(Object element
) {
59 if(element
instanceof TaxonNode
){
60 return ((TaxonNode
) element
).getCountChildren() > 0;
62 return getChildren(element
).length
> 0;
67 public Object
[] getElements(Object inputElement
) {
68 return this.getChildren(inputElement
);
75 public void dispose() {
80 public void inputChanged(Viewer viewer
, Object oldInput
, Object newInput
) {